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Macro photos of the Galaxy S8

The glass back of the Galaxy S8

Heart rate monitor

LED flash

LED flash

Camera

Fingerprint sensor

Fingerprint smudge

The front of the Galaxy S8

Earpiece grill

Iris scanner and selfie camera

Bixby Voice

USB-C

Bottoms up

Bottoms up

A golden finish

Macro photos of the Galaxy S8

The Galaxy S8 is a beautiful phone all around. CNET photographer Josh Miller took a series of macro photos to show off some of its tiniest features. 

Caption by / Photo by Patrick Holland/CNET

For reference, here's a wide shot of the rear showing the S8's camera (center), fingerprint reader (right) and an enclosure containing the flash and a heart rate sensor (left).

Caption by / Photo by Josh Miller/CNET

On the bottom of the flash enclosure are two compartments that make up the heart rate monitor. The bottom half contains two diodes that create a red light which shines through the skin of a finger. The top half has a grouping of four sensors that measure the light reflected back from a blood vessel. These measurements are translated into a frequency to determine your heart rate per minute.

Caption by / Photo by Josh Miller/CNET

The rear LED flash has a thin plastic Fresnel lens, commonly used in automobile headlights and lighthouses. The circular grooves spread the light to cover a wider area.

Caption by / Photo by Josh Miller/CNET

And here's the same LED flash in action.

Caption by / Photo by Josh Miller/CNET

The S8 has a 12-megapixel dual-pixel camera that allows for speedy focus and excellent low-light photos. 

Caption by / Photo by Josh Miller/CNET

Samsung got rid of the home button which meant moving the fingerprint sensor (right) to the back of the phone next to the camera. Notice the raised edges around the camera housing and fingerprint sensor. When holding the phone, the edges are barely detectable.

Caption by / Photo by Josh Miller/CNET

A consequence of moving the fingerprint sensor next to the camera are fingerprint smudges. To the naked eye, fingerprint smudges are hard to see, but up close the oils of the fingerprint reflect off the glass back. We tested taking photos with fingerprint smudges on the lens. Check out our results.

Caption by / Photo by Josh Miller/CNET

For reference, here's a wide shot of the front of the S8. Across the top is the earpiece (top center), the selfie camera and iris scanner (top right) and the barely visible iris recognition LED (top left). Not seen on the top left are the proximity sensor and LED indicator light for notifications.

Caption by / Photo by Josh Miller/CNET

The earpiece of the S8 is barely wider than a fingernail. Notice the absolutely minuscule cross-hatched grill of the recessed earpiece.

Caption by / Photo by Josh Miller/CNET

The selfie camera (left) and an iris scanner (right) are both recessed behind the front glass of the S8.

Caption by / Photo by Josh Miller/CNET

One the left side of the phone are two hardware buttons. The larger button (on the left) is the volume rocker. The smaller button on the right a button that triggers Samsung's Bixby Voice software. To use it, the button must be pressed and held down like a walkie-talkie.

Caption by / Photo by Josh Miller/CNET

Inside the USB-C port on the bottom of the phone, you can see 12 of the 24 metal contacts that are used to charge, and share data off the S8.

Caption by / Photo by Josh Miller/CNET

Across the bottom edge from left-to-right are an antenna line and headset jack. Inside the headset jack barrel you can see the contacts.

Caption by / Photo by Josh Miller/CNET

The bottom left edge from left-to-right has a pinhole for the microphone, speaker grill and another antenna line.

Caption by / Photo by Josh Miller/CNET

Here's an S8 Plus in gold. Both the S8 and S8 Plus have all glass front and back. The rear glass is painted front the inside. The "Galaxy S8+" logo is painted directly on the glass and if you look close enough, you can see the depth of the letters atop the goose bump texture of the gold paint.

Caption by / Photo by Josh Miller/CNET

Our reviewer described the Samsung Galaxy S8 as "the most beautiful, polished phone" she's ever held. And as these photos clearly show, that beauty appears in its tiniest details.

Caption by / Photo by Josh Miller/CNET
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